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High Working Capacity Acetylene Storage at Ambient Temperature Enabled by a Switching Adsorbent Layered Material.

ABSTRACT: Unlike most gases, acetylene storage is a challenge because of its inherent pressure sensitivity. Herein, a square lattice (sql) coordination network [Cu(4,4'-bipyridine)₂(BF₄)₂]_n (sql-1-Cu-BF₄) is investigated with respect to its C₂H₂ sorption behavior from 189 to 298 K. The C₂H₂ sorption studies revealed that sql-1-Cu-BF₄ exhibits multistep isotherms that are temperature-dependent and consistent with the transformation from "closed" (nonporous) to four "open" (porous) phases induced by the C₂H₂ uptake. The Clausius-Clapeyron equation was used to calculate the performance of sql-1-Cu-BF₄ for C₂H₂ storage at pressures >1 bar, which revealed that its volumetric working capacity at 288 K is slightly superior to acetone (174 vs 170 cm³ cm^-3) over a safer pressure range (1-3.5 vs 1-15 bar). Molecular simulations provided insights into the observed switching phenomena, revealing that the layer expansion of sql-1-Cu-BF₄ occurs via intercalation and inclusion of C₂H₂. These results indicate that switching adsorbent layered materials offer promise for utility in the context of C₂H₂ storage and delivery.

SUBMITTER: Wang SQ

PROVIDER: S-EPMC8289182 | biostudies-literature |

REPOSITORIES: biostudies-literature

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A porous metal-organic framework with ultrahigh acetylene uptake capacity under ambient conditions.

Project description:Acetylene, an important petrochemical raw material, is very difficult to store safely under compression because of its highly explosive nature. Here we present a porous metal-organic framework named FJI-H8, with both suitable pore space and rich open metal sites, for efficient storage of acetylene under ambient conditions. Compared with existing reports, FJI-H8 shows a record-high gravimetric acetylene uptake of 224?cm(3) (STP)?g(-1) and the second-highest volumetric uptake of 196?cm(3) (STP)?cm(-3) at 295?K and 1?atm. Increasing the storage temperature to 308?K has only a small effect on its acetylene storage capacity (?200?cm(3) (STP)?g(-1)). Furthermore, FJI-H8 exhibits an excellent repeatability with only 3.8% loss of its acetylene storage capacity after five cycles of adsorption-desorption tests. Grand canonical Monte Carlo simulation reveals that not only open metal sites but also the suitable pore space and geometry play key roles in its remarkable acetylene uptake.

| S-EPMC4491824 | biostudies-other

Coulombic self-ordering upon charging a large-capacity layered cathode material for rechargeable batteries.

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| S-EPMC8395626 | biostudies-literature

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Project description:We realized that tailoring the pore size/geometry and chemistry, by virtue of alkynyl or naphthalene replacing phenyl within a series of isomorphic MOFs, can optimize methane storage working capacities, affording an exceptionally high working capacity of 203 cm3 (STP) cm-3 at 298 K and 5-80 bar.

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| S-EPMC5826983 | biostudies-literature

Layered material platform for surface plasmon resonance biosensing.

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| S-EPMC6937298 | biostudies-literature

Long-Term Storage of Human Cells at Ambient Temperature

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2005-08-01 | GSE1364 | GEO

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| S-EPMC10625602 | biostudies-literature

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